Loom for weaving thick and thin striped fabric



Nov. 24, 1931. H. H. BURDETT LOOM FOR WEAVING THICK AND THIN STRIPED FABRIC 2 Sheets-Sheet Filed Feb. 26, 1931 Nov. 24, 1931. BURDETT 1,833,046

LOOM FOR WEAVING THICK AND THIN STRIPED FABRIC Filed Feb. 26, 1931 2 Sheets-Sheet 2 \nvenTov.

Fatented Nov. 24, 1931 "warren STATES PATENT OFFICE HORACE H. BURDETT, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER CORPORATION, OF HOPEDALE, MASSACHUSETTS, A CORPORATION F MAINE LOOM. FOR WEA'VING THICK AND THIN STRIPED FABRIC Application filed. February 26, 1931. Serial No. 518,342.

This invention relates to a loom operating to vary the condensation of the filling in the cloth as it is woven so as to produce thick and thin places transversely of the cloth and thereby give a transverse striped effect.

A co-pending application of Clare H. Draper, Serial No. 518,317, filed Feb. 26, 1931, discloses a mechanism for producing this effect and the present invention is subsidiary thereto and has for its object to provide means for producing either a decrease or an increase in the condensation of the filling at regular or irregular intervals and to predetermined extents a'lluas may be .re-

qgired to produce an endless varity of striped e ects.

lhe object of the invention is further to i provide means for effecting a rotary shift in of the take-up roll with respect to the driving mechanism in either direction at any interval required and to any extent required to produce any desired decrease or increase in the condensation of the filling.

The object of the invention is further to provide pattern-controlled means for producing the desired effect and also to provide such pattern-controlled means which acts while at all times maintaining a positive driving connection from the driving means to the take-up roll.

These and other objects and features of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims. I

As the invention is applicable to various types of looms and as the general construction and operation of such looms is well known and familiar to those skilled in the art, it is only necessary here to illustrate and describe those features of an ordinary type of loom with which a preferred embodiment of the present invention is con- 4 cerned. The embodiment illustrated makes use of much of the mechanism disclosed in the pending application of Clare H. Draper, Serial No. 429,408, filed February 18, 1930, and is subsidiary to the invention disclosed in the pending application of the said Draper,

' of the construction shown in Fig. 1 looking touiard the left of that figure and on a larger sca e. i

Fig. 3 is a detail chiefly in vertical cross section taken on the line 33 of Fig. 2.

The loom comprises the usual side frames of which a portion of the left-hand frame 1 is shown with the breast beam 2 extending therefrom to the opposite side frame, a usual form of take-up roll 3 is journalled in the side frames under the breast beam and usually presents a roughened surface to grip the cloth which is wound on the cloth roll 4 by'frictional engagement with the take-up roll. A

shaft 5 is journalled in a bearing bracket 6 supported on the bottom of the frame and this shaft has journalled thereon a gear 7. A train of gearing which may be of any suitable arrangement and indicated generally at 8 extends from the gear 7 to the shaft 9 of the take-up roll so that any rotation imparted in either direction to the gear 7 will in i turn be positively and definitely imparted to the take-up roll. But it will be understood that the particular driving connections between the element 7 and the shaft 9 of the take-up roll may be of any suitable construction so long as they act to impart positively, directly, and accurately the rotation of the take-up roll in either direction according to the direction of rotation of the element 7.

The shaft 5 has keyed thereto a worm wheel 10 and this worm wheel meshes with and is driven by a worm 11 keyed to a shaft- 12 journalled in the bearing bracket 6 and extending rearwardly in the loom frame and positively driven from one of the usual loom shafts. The shaft has also keyed thereto at 13 a bevelled gear 14. The shaft 5 with this gear 14 constitutes a positively driven element which in this case is the driving element for the take-up roll. But the means by which the final driving element, or in this case the bevelled gear 1%, is given a positive rotation may be of any suitable form and construction and specifically considered forms no part of. they present invention.

A driven element in the form of a bevelled gear 15 is journalled in axial alignment with the driving element or bevelled gear 14 and is preferably for that purpose journalled on the shaft 5. a direct driving connection to the take-up roll and for that purpose is preferably formed rigid or integral with the gear 7 and thus a'ts through the train of gearingxe to drive. the take-up roll.

A differential system of gearing is illustrated including the bevelled gears 14' and 15 and comprises a cylindrical housing 16 rotatable coaxially of the shaft 5 and provided with one or more intermediate bevelled gears 17 herein shown as three in number having their shafts l8 iournalled radially in the. housing and so arranged that the bevelled gears 17 mesh with both of the bevelled gears 14% and 15.

The outer cylindrical surface of the housing 16 is formed to present a worm wheel 19 and this worm wheel19meshes with a worm 20 secured to an auxiliary or transverse shaft 211journalled in portions 22' of the bearing bracket 6.

This type of gearing connection between the housing and the auxiliary shaft is desirable because it acts to hold the housing against rotation except when the worm 20 is turned in the one dire'tion or the other. Consequently unless the worm is thus turned, the ratio of speed between the take-up roll and the driving means will remain constant.

A transmitting shaft 23 extends diagonally with its axis intersecting'the axes of the shaft 12 and the auxiliary shaft 21 and is iournalled in suitable bearings formed in brackets supported from the loom frame. Such bearings are shown at 2 1' and 25 formed 1 onv a bracket section 26 secured to that nortion of the bracket 6'in which the shaft 12 is journalled, while a third bearing 27 is shown on a bracket section 28 supported freely onthe shaft 21. At its lower end the transmitting shaft 23 is provided with a bevelled gear 29 meshing with a bevelled gear 30secured to the forward end of the auxiliary shaft 21. Near its upper end the transmitting shaft 23 is provided with a pair of oppositely disposed bevelled gears 31 and 32 This driven element 15 imparts freely rotatable thereon between the bearings 24 and 25. These bevelled gears 31 and 32 mesh at diametrically opposite points with a large bevelled gear secured to the end of the shaft 12. A clutch sleeve 34 is keyed to the transmitting shaft 23 and is provided at its ends with clutch surfaces such as the teeth 35 adapted to engage with corresponding clutch suriaces on the bevelled gears 31 and 32. Consequently if the clutch sleeve 34 be moved into clutching engagement with the bevelled gear 31 and out of clutching engagement with the bevelled gear 32,, the shaft 23 will be rotated in one direc tion and will rotate the auxiliary shaft 21 and the housing 16, which is the intermediate element of. the differential gear mechanism, in one direction. Consequently also if the clutch sleeve be moved into clutching engagement with the bevelled gear 32 and out of clutching engagement with the bevelled gear 31, a rotation of the housing 16 inthe opposite direction will. take place. If the clutch sleeve be left in its intermediate position shown in Fig. 1, that is, out of clutching engagement with both bevelled gears 31 and 32, then the housing 19' will be held stationary locked against rotation by the engagement of the vorm 20 with the worm wheel 19.

If the housing 16 is held stationary, the only movement imparted to the take-up roll will be the direct, positive driving action from the positively driveir shaft 5 and bevelled gear 14 through the intermediate gears 17 to the bevelled gear 15 and thencethrough the train of gearing 7 and 8 to the take-up roll. If, however, the housing 16 be rotated in the one direction or the other, a rotary shift of the take-up roll relatively to the driving element, that is, the shaft 5 and bevelled gear 14, will take place and such relative rotary shift of the take-up roll will act to vary the concentration of the filling in the cloth being woven either decreasing or increasing that concentration in accordance with the direction in which the relative rotary shift takes place. Consequently by varying the times at which this relative rotary shift of the take-up roll takes place and the direction in which it takes place and the extent to whichit takes place, an infinite variety of transverse striped effects may be produced in the cloth comprising zones where the filling is'either' beaten in in the usual manner where the filling is beaten in less frequently to form a thin place and where the filling is crowded in to form a thick place.

The invention provides in thespecific embodiment illustrated, a simple form ofpatternmechanism for shifting the clutch sleeve 35 either into engagement with the bevelled gear'31, into neutral position, or into enga gement with the bevelledgear 32, thus enabling an infinite variety of striped effects to be pro- 'duced by varying as desired the concentration of the filling in the cloth being woven. The mechanism illustrated for this purpose is conveniently operated directly from the shaft 12 which is constantly and positively driven. F or this purpose the shaft 12 is shown as having secured thereto a gear 36 in the rear of the bevelled gear 33 and this gear 36 meshes with the pinion 37 secured on a short shaft 38 journalled in a'bracket section 39 upstanding from the bracket section 26. This shaft 38 has secured thereto at its forward end a sprocket wheel 40 driving a sprocket pattern chain 41 of any required length and extending upwardly over an idler 42 journalled in a bracket 43' secured to the side frame 1. A lever 44 is fu crumed at 45 on the bracket section 39 and at its lower end is provided with a stud 46 riding in an annular groove 47 in the center of the clutch sleeve 34. This lever is swung and held between and into the three required positions to shift the clutch sleeve 34 either into clutching engagement with the bevelled gear 31, into neutral position, or into clutching engagement with the bevelled gear 32 under the control of the pattern chain 41. For this purpose the lever 44 is normally pressed to move the clutch sleeve 34 into clutching engagement with the bevelled gear 31 by the spring 48 seated against it and against a projection 49 on the bracket section 39. The links of the pattern chain are provided according to the desired pattern to be produced with any desired arrangementand sequence of lugs of three types, first, lugs such as 50 projecting sufliciently so that when they engage the projection 51 on the lever 44 it will slide the clutch sleeve 34 into clutching engagement with the bevelled gear 32, second, lugs su..h as 52 projecting sufficiently so that when they engage the projection 51 they will slide the clutch sieeve 34 into neutral position, and, third, lugs such as 53 projecting sufficiently so that when they engage the projection 51 the clutch sleeve will be slid by the spring 48 into engagement with the bevelled gear 31.

Thus by varying the position, kind and number of the lugs, any desired degree and arrangement of condensation of the filling may be produced to produce any required transverse striped effect in the cloth.

Having thus des-ribed the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. A loom comprising a take-up roll, means for driving the take-up roll in a direction to effect take-up, and pattern-controlled means acting to effect rotary shift of the take-up roll relative to its driving means in either direction at predetermined times and to prede termined extents.

2. A loom comprising a take-up roll, means for driving the take-up roll in a direction to effect take-up, and means acting to effect rotary shift of the take-up roll relative to its driving means in either direction at predetermined regular or irregular intervals and to predetermined extents.

3. A loom comprising a take-up'roll, means for driving the take-up roll in a direction to eife-t take-up, and pattern-controlled means acting without disconnecting the said driving means from the take-up roll to effect rotary shift of the take-up roll relative to its driving means in either direction at predetermined times and to predetermined extents.

4. A loom comprising a take-up roll, means for driving the take-up roll in a direction to effect take-up, and means acting without disconnecting the said driving means from the take-up roll to effect rotary shift of the takeup roll relative to its driving means in either direction at predetermined regular or irregular intervals and to predetermined extents.

5. A loom comprising a take-up roll, means for drivi g the take-up roll in a direction to eflect take-up, and pattern-controlled means acting either to maintain a fixed ratio of speed between the take-up roll and its driving means or to effect a rotary shift of the takeup roll in either direction relative to its'driving means.

acting either to maintain a fixed ratio of speed between the take-up roll and its driving means or to effect a rotary shift of the takeup roll in either direction relative to its driving means without in either case disconnecting the said driving means from the takeup roll. 7 V

7. A take-up mechanism for looms comprising a driving element, a take-up roll, a train of permanent connections between said driving element and take-up roll and pattern-controlled means for movin one of said connections in either of two opposite directions to effect rotary shift of the take-up roll in either direction relative to the driving element thereby to vary the condensation of the filling in the cloth.

8. A loom comprising a take-up roll, driving mechanism, a differential system of gearing between the driving mechanism and the take-up roll for driving the latter from the former to effect take-up, and means acting to rotate bodily in opposite directions the intermediate element of the differential gearing at regular or irregular intervals and to predetermined extents thereby to shift in opposite directions the rotary position of the take-up roll with respect to the driving mechanism and produce variations in the condensation of the filling in the cloth.

9. A loom comprising a take-up roll, driving mechanism, a differential system of gearing between the driving mechanism and the take-up roll for driving the latter fromthe former to effect take-up, and pattern-controlled means acting either to maintain the intermediate element-of the-differentialgearing stationary or to rotate the same bodily in either direction at predetermined times and to predetermined extentsthereby to produce any desired variation in the condensation of the filling in the cloth.

10. A loom comprising a shaft, means'for positively driving the shaft, a driving gear secured to the shaft, a driven gear journalled in axial alignment with the shaft, a take-up roll, a aring connection between the take-up roll and the driven gear, a housing rotatable coaxialljy with the shaft, an intermediate gear journalled in the housing and meshing with the driving. and driven gears, and patterncontrolled means acting to control the positionof the housing and to rotate the housing iii-opposite directions at predetermined times andto predetermined extents thus to effect a take-up action of the cloth with predetermined variations-in the condensation of the filling therein.

11. A loom comprising a shaft, means for positively driving the shaft, a driving gear secured to theshaft, a driven gear journalled in axial alignment with the shaft, a take-up roll,a gearing connection between the takeup roll and the driven-gear, a housing rotatable coaxially with the shaft, an intermediate gear journalled in the housing and meshing. with the driving and driven gears, an auxiliary shaft, a cooperating worm wheel on the housing and worm on the auxiliary shaft and pattern-controlled means for rotating the auxiliary shaft in either direction at predetermined times and to predetermined extents thereby to produce any desired variation in the'condensation of the-filling in the clotlr 12. A loom comprisinga shaft, means for positively driving the shaft, a driving gear secured to the shaft, a driven gear journalled in-axial alignment with the shaft, a take-up roll, a gearing connection between the takeup roll and the driven gear, a housing rotatable coaxially With the shaft, an intermediate gear journalledin the housing and meshingwith the driving and driven gears, an auxiliary shaft, a cooperating worm wheel on the-housing and worm onthe auxiliary shaft, a-transmitting shaft geared to the auxiliary shaft, a gear driven by'the said shaftdriving means, gearsjournalled on the transmitting shaft and in mesh at diametrically opposite points I with said latter driven gear, and pattern-controlled means for connecting either of said latter gearsto, or disconnecting both from, the transmitting shaft, thereby either toeffect rotary shift'of the takeup roll relative to its drivingmeans in either direction or to maintain constant the ratio of speed therebetween.

13, A loom comprisingthe c'onstructionde- HORACE H. BURDETT. 

